import Vue from "vue"
import Router from "vue-router"

Vue.use(Router)

/* Layout */
import Layout from "@/layout"

/**
 * Note: sub-menu only appear when route children.length >= 1
 * Detail see: https://panjiachen.github.io/vue-element-admin-site/guide/essentials/router-and-nav.html
 *
 * hidden: true                   if set true, item will not show in the sidebar(default is false)
 * alwaysShow: true               if set true, will always show the root menu
 *                                if not set alwaysShow, when item has more than one children route,
 *                                it will becomes nested mode, otherwise not show the root menu
 * redirect: noRedirect           if set noRedirect will no redirect in the breadcrumb
 * name:"router-name"             the name is used by <keep-alive> (must set!!!)
 * meta : {
    roles: ["admin","editor"]    control the page roles (you can set multiple roles)
    title: "title"               the name show in sidebar and breadcrumb (recommend set)
    icon: "svg-name"/"el-icon-x" the icon show in the sidebar
    breadcrumb: false            if set false, the item will hidden in breadcrumb(default is true)
    activeMenu: "/example/list"  if set path, the sidebar will highlight the path you set
  }
 */

/**
 * constantRoutes
 * a base page that does not have permission requirements
 * all roles can be accessed
 */
export const constantRoutes = [
  {
    path: "/login",
    component: () => import("@/views/login/index"),
    hidden: true
  },

  {
    path: "/404",
    component: () => import("@/views/404"),
    hidden: true
  },

  {
    path: "/",
    component: Layout,
    redirect: "/dashboard",
    children: [{
      path: "dashboard",
      name: "Dashboard",
      component: () => import("@/views/dashboard/index"),
      meta: { title: "Dashboard", icon: "dashboard" }
    }]
  },

  {
    path: "/example",
    component: Layout,
    redirect: "/example/table",
    name: "Example",
    meta: { title: "Example", icon: "el-icon-s-help" },
    children: [
      {
        path: "table",
        name: "Table",
        component: () => import("@/views/table/index"),
        meta: { title: "Table", icon: "table" }
      },
      {
        path: "tree",
        name: "Tree",
        component: () => import("@/views/tree/index"),
        meta: { title: "Tree", icon: "tree" }
      },
      {
        path: "myTable",
        name: "MyTable",
        component: () => import("@/views/myTable/index"),
        meta: { title: "MyTable", icon: "table" }
      }
    ]
  },
  {
    path: "/echart",
    component: Layout,
    children: [{
      path: "/echart",
      name: "echart",
      component: () => import("@/views/echart/index"),
      meta: { title: "数据可视化", icon: "table" }
    }
    ]

  },

  {
    path: "/form",
    component: Layout,
    children: [
      {
        path: "index",
        name: "Form",
        component: () => import("@/views/form/index"),
        meta: { title: "Form", icon: "form" }
      }
    ]
  },
  {
    path: "/upload",
    component: Layout,
    children: [
      {
        path: "upload",
        name: "upload",
        component: () => import("@/views/myUpload/index.vue"),
        meta: { title: "upload", icon: "form" }
      }
    ]
  },

  {
    path: "/nested",
    component: Layout,
    redirect: "/nested/menu1",
    name: "Nested",
    meta: {
      title: "Nested",
      icon: "nested"
    },
    children: [
      {
        path: "menu1",
        component: () => import("@/views/nested/menu1/index"), // Parent router-view
        name: "Menu1",
        meta: { title: "Menu1" },
        children: [
          {
            path: "menu1-1",
            component: () => import("@/views/nested/menu1/menu1-1"),
            name: "Menu1-1",
            meta: { title: "Menu1-1" }
          },
          {
            path: "menu1-2",
            component: () => import("@/views/nested/menu1/menu1-2"),
            name: "Menu1-2",
            meta: { title: "Menu1-2" },
            children: [
              {
                path: "menu1-2-1",
                component: () => import("@/views/nested/menu1/menu1-2/menu1-2-1"),
                name: "Menu1-2-1",
                meta: { title: "Menu1-2-1" }
              },
              {
                path: "menu1-2-2",
                component: () => import("@/views/nested/menu1/menu1-2/menu1-2-2"),
                name: "Menu1-2-2",
                meta: { title: "Menu1-2-2" }
              }
            ]
          },
          {
            path: "menu1-3",
            component: () => import("@/views/nested/menu1/menu1-3"),
            name: "Menu1-3",
            meta: { title: "Menu1-3" }
          }
        ]
      },
      {
        path: "menu2",
        component: () => import("@/views/nested/menu2/index"),
        name: "Menu2",
        meta: { title: "menu2" }
      }
    ]
  },

  {
    path: "external-link",
    component: Layout,
    children: [
      {
        path: "https://panjiachen.github.io/vue-element-admin-site/#/",
        meta: { title: "External Link", icon: "link" }
      }
    ]
  },

  // 404 page must be placed at the end !!!
  { path: "*", redirect: "/404", hidden: true }
]

const createRouter = () => new Router({
  // mode: "history", // require service support
  scrollBehavior: () => ({ y: 0 }),
  routes: constantRoutes
})

const router = createRouter()

// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
export function resetRouter() {
  const newRouter = createRouter()
  router.matcher = newRouter.matcher // reset router
}

export default router
